Washington (CNN) – Echoing similar remarks earlier in the day from President Barack Obama, Vice President Joe Biden vowed Tuesday to "get to the bottom" of Monday's terror attack at the Boston Marathon.

"We don't have any hard information yet," Biden said on his way to an event on Capitol Hill. "But I can assure we will find out who did it and bring them to justice."FULL POST

(CNN) – An official with a local Democratic Party group alleged Thursday a Kentucky-based liberal organization was responsible for the secretly recorded tapes of Sen. Mitch McConnell plotting campaign strategy.

Jacob Conway, an executive committee member of the Louisville-Jefferson County Democratic Party, told CNN that members of Progress Kentucky admitted to him in February they made the recording. That's the same group behind offensive tweets posted last month targeting McConnell's wife.FULL POST

(CNN) – One of the questions to emerge from that secret recording of a Mitch McConnell campaign strategy session is whether it proves the Senate Minority Leader is caught on tape misusing his congressional staff.

The DC-based watchdog group, Citizens for Responsibility and Ethics and Washington has asked the FBI to investigate.FULL POST

(CNN) – The Ready for Hillary super PAC is getting some high-profile help.

James Carville, the Democratic strategist who has close ties to Bill and Hillary Clinton, sent an email to the group's distribution list saying he supports the PAC and wants people to get on board.FULL POST

Charleston, South Carolina (CNN) – Former Gov. Mark Sanford finished first in Tuesday's crowded Republican primary for the U.S. House special election in South Carolina, CNN projects. However, Sanford fell well short of the 50% margin needed to avoid a runoff.

The former governor will compete against Curtis Bostic, a former Charleston councilman, in a runoff election in two weeks. The third place finisher, state Sen. Larry Grooms, conceded the race Wednesday.FULL POST

Charleston, SC (CNN) - In this heated congressional race along the South Carolina coast known as "Low Country," the candidates haven't exactly taken the high road.

Take the flyer mailed out to voters that takes aim at the state's former governor, Mark Sanford, over the extramarital affair he once tried to hide by saying he was hiking the Appalachian Trail.FULL POST

Charleston, South Carolina (CNN) - In South Carolina, Mark Sanford needs no introduction.

But after the former governor of the state infamously told the public he was hiking the Appalachian Trail while he was actually traveling to Argentina to carry on an extramarital affair, a reintroduction wouldn't hurt.

"At some level or another we all hope for redemption," Sanford told CNN in an interview.